Kapteyn
Kapteyn is an M2.0V star 12.8 light years away with 1 known planet. It was found in 2014.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| Kapteyn c (disputed) | 121.5 days | 0.311 AU | at least 7 | 2014 | Radial Velocity |
"At least" is a minimum mass. Radial velocity can only measure mass times the sine of the orbit's tilt.
Star
- Spectral type M2.0V
- 3,550 K surface temperature
- 0.281 times the mass of the Sun
- 0.291 times the radius of the Sun
Data from the NASA Exoplanet Archive, as of October 3, 2026. In the 3D view sizes and distances are compressed and every orbit is drawn in the same plane. Where each planet sits along its orbit is made up.